US1503674A - Perforating machine - Google Patents

Description

ug. 5 1924. i 1,503,674

E. URDANG ET AL PERFORATING MACHINE Filed Sept. 24, 1925 y INVENIORS I ATTORNEY Patented Aug. 5, 1924.

UNITED STAT staar EDWARD URDANG AND HARRY H. LE VITA, OF NEW YORK, N. Y.

PERFORATING BTACHINE.

Application led September 24, 15523. Serial No. 664,441.

To all whomzt may concern.'

Be it known that we, EDWARD URDANG and HARRY H. Ln VITA, both citizens of the United States, residing at New York city,

boroughs of Manhattan and the Bronx, respectively, in the counties of New York and Bronx, respectively, and State of'New York, have invented certain new and useful improvements in Perforating Machines, of

which the following is a specification.

This invention relates to perforating machines of the general type in which the perforating or puncturing instrument is recip-rocated rapidly by meansY of aV power device such as an elect-ric motor, the entire device being portable or guidable by the hand of the operator while in operation.

Among the objects of the invention is to provide a relatively cheap, simple, and yet effective device of the nature above indicated, the same having peculiar adaptability for durability and reliability as well as for ease'and efficiency of operation.

Y More specifically, our improvement comprises a casing in which all of the operating` parts are housed except the 'reciprocating member and which casing is peculiarly con structed so as to assist* in the manipulation and guiding of the needle or perforating 80 instrument along the pattern.'

Another object of the4 invention' is to simplifyl theA construction of the casing mechanism not yonly with respect to facility of formation and assemblage, but also as y to the bearing connections for the movable parts within the casing.

This application constitutes a substantial continuation in some of the principal features of` our previous application filed the 19th day of August, 1922, Serial No. 582,838, and allowed on the 24th day of July, 1923. s

lVith the foregoing and other objects in 'View the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein,

still for the purpose of illustrating a. prac-A tical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views,'and in which- Figure 1 is an end elevation of the device,

a part of the end of the casingextension being in section to better indicate the operating mechanism.

Fig. 2 is a side elevation of the device with parts in section.

Fig. 3 is a horizontal section on the line 8 3 of Fig. 2.

Fig. 4 is a detail perspective of a side part of the casing.

Figs. 5 and 6 are detail end and side views of a modified form of cam.

Referring now more specifically to the drawings we show acasing comprising a main body portion 10, constituting a hand hold or grip, and from which extends laterally a wing portion 11. The body casing includes a base or bottom 12 adapted to glide over the pattern or work, and including also front and rear sides 13 and 14 respectively, either integral orV separate from each other. rlhe top of the casing is indicated at 16. The several parts of the casing may be secured detachably or otherwise by any suitable means such as screws 18. The side wall members include flat portions 19 formed at right angles to wing extensions 20, and between the extensions 2O is located an end wall 15 parallel to the panels 19. The bottom of the wing 11 is a plate 17 which is provided with a vertical angular extension 21 with which end portions of the panels 19 co-operate making a complete closure for the mechanism within the casing.

Fixed in any suitable manner upon the base 12 is a motor comprising a frame 23 from which leads a shaft 25 from the rotor 26 of the motor. The shaft extends into the wing extension 11 of the casing and fixed removably to the end of the shaft is an actuator shown in Figs. 1 and 2 as comprising a double throw cam 22. On the side of the cam remote from the shaft and in alignment withthe shaft is formed a pit 24 in which is fitted an anti-friction bearing ball 27 extending into a pit 24 formed in the wall 15. The cam 22 is provided preferably with a peripheral groove 22 for co-operation with a second bearing ball 28.

The feed wires 29 for the motor are connected to binding posts 30 and 31, and associated with the binding post 30 is a contact 32 which extends laterally toward but spaced slightly from the panel 19 of the front wall 13. A finger piece in the nature of a push button 33 projects through a hole in this portion of the casing in convenient position to be` pushed by the operators thumb as he grasps and manipulates the device and said push button is carried by a contact spring 34fleading toward the rotor, the circuit being closed by pressing inward upon the button until the contacts 32 and 34 are brought together.

37 indicates a vertically mounted reciprocatingbar guided for vertical movements in a sleeve 33 preferably screw threaded into thebottom wall 17 ofthe casing extension. The bar has a head 39 on its upper end withinv the casing. The bearing, ball 28 rests within a pit formed in the upper surf-aceof the. head and A constitutes a Y contact -member between the cam and the bar, and a spring 4Q surrounding the bar between the head and the sleeve serves to keep the bar elevated ,and with bearingball in contact 'with bothA thehead and .the cam. The spring, of course perm-itsthe throw of the cam to project the bar downward. A needle or punch 41 of anysuitable design, according to they workto be performed, is carried preferably detachably by meansof aI chuck 42 at the lower .end of the-bar.` p

Asshownin Figs. l and 2 the bar will be reciprocated. downward twicey for each rotation of the motor shaft 25. In Figs-5 and 6, however, we show acam 222L havinga single throw so that Vbut one reciprocation. of the bar will .be effectedat each rotation of the shaft. Otherwisethe parts are constructed andoperate similarly to the form in Figs. l and 2. The cams. are attached separably to the shaft for ,interchange Y,or adjustment as by meansy ofl asetscrew 43 operating through a'hubill formed .on the cam;

In'fthe. use. of the. devicethe operator graspsthe'main portion of the casing, with his thumb applied close to the button` 33. Withthe device thus grasped or held. the operator may lmove thek entire devicefreely over ythe tablelor workanywhere 'within the limits prescribed by thewires 29, and. when the button 33 is pressed the motor will rotate rapidly, causingirapid reciprocations of thebarV 37 and needle. 41. 'Ihe bearingsleeve 38; beingjlof.; considerable length gives a steady position forv the bar limiting it only to reciprocations. Thedevice is very small andv compact and may be guided reliably alonglany desired. course or pattern to be perforated. or otherwise treated. Usually in work of this kind the pattern `is laid'upon a number of plies of. paper so that a vnuml ber of sheets may be perforated at thesame time.

To facilitate the guiding of the machine, over -a pattern along regularly formed lines, asl forinstance straight lines, the body of the casing includes rflat vfaces or panels 44C both lyingxinplanes substantially tangent to a small imaginary circle whose center is the axis of the needle 4l. A straight edge therefore laid close -to a straight kline to be perforated may be employed to guide the machine by contact with either of the surfaces il as suggested by the dot and Vdash lines 46. The operator by holding the straight edge in one hand may move the machine in his other hand to cause the needle to move along a straight line as will be readily understood.

We claim: Y

l. In a perforating machine, the combination of a motor, a reciprocating tool bar remote from the motor, an actuating member extending between the motor and the bar for reciprocating the latter from the motor,

a casing inclosing the motor and also said actuating member and in which the end of the actuating member remote from the motor is operatively supported, said motor casing serving as a hand grasp and as a supporting means for thedevice in opera tion, and means-formed 'on the sides of the motor casingservingas guiding means in connection with a straight edge arranged substantially in alignment with the sideof the reciprocating tool bar, substantiallyl as set forth.v

2. In mechanism of the nature set forth,

the combination `of a reciprocatingbar, aL

needle attached to one end thereof, power means to reciprocate the` bar, and means to carry and control the action of the power means, said means comprising a casing movable over the work and having; a straight portion lying in a plane substantially tangent to the side of the bar and including also a finger piece to be operated coincident with the. manual operation of the casing, substantially as set forth.

3.,The herein described perforatingmachinecomprisinga casing manually movable over the work, a rotary device including a shaft within the casing, means, to control the rotation of the shaft coincident with the manual manipulation of the casing,an anti-friction bearing support for the otherwise free end of the shaft co-operating with the end wall of the casing, acam connected tothe shaft adjacent to the antifriction device, a bar mounted in the casing and acted upon by said cam for reciprocating. it perpendicularly with respect to the shaft, and a tool carried by the bary for operating upon the work over which the casingv is movable.

4f In a perforating machine, the combination of -a casinghaving a lateral extension, a e guide sleeve secured to the extension, a reciprocating bar fittedV slidably in the sleeve, a rotary motor shaft journaled in thecasing perpendicular to the bar, and means between the shaftV and the bar for imparting reciprocations to the bar Vfrom the rotation of the-shaft, saidmeans comprising a cam affixed to the end of the shaftr and having a peripheral groove eccentric to the axis of the shaft, a contact member between the cam groove and the end of the bar, whereby the rotation of the shaft and cam causes movement of the bar in one direction, and means acting to reciprocate the bar in the opposite direction, maintaining said contact member in said groove.

5. In a perforating machine, the combination of a main casing having a lateral extension including an end wall with a pit formed on the inner surface, a power shaft mounted in the casing and extending horizontally into the extension in alignment with said pit, a cam fixed to the end of the power shaft adjacent to the pit and having an eccentric periphery, the wall of the cam member adjacent to the pit being provided also with a pit, a centering member located in said pits and serving to support the end of the shaft having the cam, a bar mounted to reciprocate in the casing extension at an angle to the power shaft and having a head adjacent to the cam, a spring surrounding the bar and tending to hold the head in close proximity to the cam member, and a contact member acting between the cam and said head and through which and the rotation of the shaft and the eccentricity of the cam the bar is forced away from the axis of the shaft and against the tension of the spring.

In testimony whereof we ax our signatures.

EDWARD URDANG. HARRY H. LE VITA.

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